What other 95k maintenance when I clean EGR?

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by gafortiby, Dec 31, 2025 at 8:28 PM.

  1. gafortiby

    gafortiby Member

    Joined:
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    Location:
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    Vehicle:
    2012 Prius v wagon
    Model:
    Two
    On this last day of 2025, my 2012 Prius V is at 95k and still on factory original:
    1. inverter coolant (tested full alkaline with test strip, color/smell is like new)
    2. engine coolant (color/smell is like new)
    3. front brake pads (still many mm left)
    4. rear brake pads (only about 4mm left)
    5. brake fluid (tested zero moisture with test strip, color/smell is like new)
    6. spark plugs
    7. eCVT fluid
    8. EGR components never cleaned
    9. PCV components never cleaned
    I have replaced engine oil, oil filter, engine air filter and cabin air filter every 5000 miles, and I put STP injector cleaner to my fuel tank at oil changes.

    I plan to do a full EGR clean in the next few weeks. So while I have things taken apart, should I just replace everything at once? I know the plugs can last longer, but they will be easier to reach while I have everything taken apart. My fluids test okay, but they are 13 years old so might as well replace them all? I'll do the eCVT fluid separately since I don't think that is connected to anything else.

    And what other non-standard maintenance items should I do while I'm in there? For example, the manual doesn't say I should clean EGR but I'm going to do that anyway.

    I also need to replace my old tires and leaky struts, but I will pay a shop to do that in the spring. I might pay them to replace the rear brake pads at the same time.
     
    #1 gafortiby, Dec 31, 2025 at 8:28 PM
    Last edited: Dec 31, 2025 at 8:38 PM
  2. Kenny94945

    Kenny94945 Active Member

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    New fluids are always good.
    The spark plugs, you may be right, while everything is apart, you have eased the job.
    I can say that a new transmission fluid will be felt as a seat-of-the-pants improvement.
    FWIW :)
     
    #2 Kenny94945, Jan 1, 2026 at 11:00 AM
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  3. bisco

    bisco cookie crumbler

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    i would follow the maintenance manuals time, not miles, recommendations
     
    #3 bisco, Jan 1, 2026 at 2:24 PM
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  4. Mendel Leisk

    Mendel Leisk MMX GEN III

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    Engine coolant change is very opportune to do in conjunction with the EGR clean, skirts the concerns about spillage.

    Spark plug change is not just easier with things "taken apart", it's impossible otherwise, specifically, the wipers, their linkage and motor, and the underlying metal cowl, must all come out to access the plugs. It's more-or-less mandatory for EGR clean as well.

    Part of the EGR cleaning is the intake manifold, which has EGR passages. Accordingly, that'd be an opportune to replace the PCV valve, if you're so inclined (it's right behind the intake manifold). New ones come with the threads coated with a sealant IIRC correctly. If you elect to just remove/clean/reinstall the PCV valve, I'd recommend to use and oil-tolerant, non-permanent thread lock on the threads. Also, only use the Toyota spec pcv filter, avoid this'll-do options, they'll likely have different performance specs.

    Apart from the above, I would not be "looking for other stuff to do", you'll have your hands full.

    I'd second @bisco, some of the aforementioned maintenance items are not due by miles, but are overdue by months.
     
    #4 Mendel Leisk, Jan 1, 2026 at 3:31 PM
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